| 摘要 |
<p>The invention relates to a hollow vacuum packaging product in which the ring comprises threads (1, 2, 3, 4, 5, 6, 7, 8) distributed around its periphery, between which the sealing cap enters into engagement when the hollow product is opened/closed, characterized in that in the evacuated closed condition of the hollow product, the sealing cap is able to enter into engagement only in an interval between two consecutive threads, or in several such consecutive intervals (10, 11, 12), but not in all of said intervals. Said hollow product may be a thermoplastic bottle or jar.</p> |
